Doughnut



FIG. 1 is a perspective view of a doughnut design of the invention.

FIG. 2 is a face plan view of the doughnut design of FIG. 1; and,

FIG. 3 is a side elevational view of the doughnut design of FIG. 1.

Both face views are the same; only one is shown.

Both side views, as well as the top and bottom views, are the same; only one is shown. 

The ornamental design for a doughnut, as shown and described. 